semaphore between C and PHP

This message was sent from Geocrawler.com by "Hong Eunsil" <marsis@shinbiro.com> Be sure to reply to that address. Hello.. I am making some program. I want my C program to share some data with "PHP" using semaphore & shared memory. I want next ... 1. PHP have some database query. 2. PHP transfer this query to C program. 3. C program transfer query to MySQL then C program obtain MySQL result. 4. C program manage MySQL result then return the last result to PHP Now.. the shared memory between C and PHP was made. PHP have specific rule to make share memory... so i keep the rule in C program. But I can't apply this way to make semaphore. PHP have all semaphore's list and manage the list using specific list id. PHP get sysvsem_sem structure by id. the structure can access semaphore. PHP's internal fuction _php3_sysvsem_semop() use the structure to change semaphore value. But.. _php3_sysvsem_semop() hadle not only semaphore value but also count variable in sysvsem_sem structure. <<<<---- I have terrible problem here. My C program can't access PHP's semaphore list so I can't change sysvsem_sem's count value. My C program change only semaphore value. --; My semaphore don't operate like PHP semaphore. What shall i do? Please help me. _php3_sysvsem_semop() in sysvsem.c in PHP source is like that. PHP make semaphore using that file. static void _php3_sysvsem_semop(INTERNAL_FUNCTION_PARAMETERS, int acquire) { pval *arg_id; int id, type; sysvsem_sem *sem_ptr; struct sembuf sop; switch(ARG_COUNT(ht)) { case 1: if (getParameters(ht, 1, &arg_id)==FAILURE) { RETURN_FALSE; } convert_to_long(arg_id); id = (int)arg_id->value.lval; break; default: WRONG_PARAM_COUNT; break; } sem_ptr = (sysvsem_sem *) php3_list_find(id, &type); // <<<<-- get sysvsem_sem structure from semaphore list if (type!=php3_sysvsem_module.le_sem) { php3_error(E_WARNING, "%d is not a SysV semaphore index", id); RETURN_FALSE; } if (!acquire && sem_ptr->count == 0) { // <<<<<<<<<----- Here, sem_ptr->count was checked. php3_error(E_WARNING, "SysV semaphore index %d (key 0x%x) is not currently acquired", id, sem_ptr->key); RETURN_FALSE; } sop.sem_num = SYSVSEM_SEM; sop.sem_op = acquire ? -1 : 1; sop.sem_flg = SEM_UNDO; while (semop(sem_ptr->semid, &sop, 1) == -1) { if (errno != EINTR) { php3_error(E_WARNING, "semop(%s) failed for key 0x%x: %s", acquire ? "acquire" : "release", sem_ptr->key, strerror(errno)); RETURN_FALSE; } } sem_ptr->count -= acquire ? -1 : 1; // <<<<<<----- Here sem_ptr->count was changed.. RETURN_TRUE; } Geocrawler.com - The Knowledge Archive If you experience spam, please contact Geocrawler immediately.